mcs/class/System.Security/System.Security.Cryptography.Xml/XmlDsigExcC14NTransform.cs

   1 //
   2 // XmlDsigExcC14NTransform.cs - XmlDsigExcC14NTransform implementation for XML Encryption
   3 //
   4 // Author:
   5 //      Tim Coleman (tim@timcoleman.com)
   6 //
   7 // Copyright (C) Tim Coleman, 2004
   8
   9 //
  10 // Permission is hereby granted, free of charge, to any person obtaining
  11 // a copy of this software and associated documentation files (the
  12 // "Software"), to deal in the Software without restriction, including
  13 // without limitation the rights to use, copy, modify, merge, publish,
  14 // distribute, sublicense, and/or sell copies of the Software, and to
  15 // permit persons to whom the Software is furnished to do so, subject to
  16 // the following conditions:
  17 //
  18 // The above copyright notice and this permission notice shall be
  19 // included in all copies or substantial portions of the Software.
  20 //
  21 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  22 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  23 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  24 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  25 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  26 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  27 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  28 //
  29
  30 #if NET_2_0
  31
  32 using Mono.Xml;
  33 using System.IO;
  34 using System.Xml;
  35
  36 namespace System.Security.Cryptography.Xml {
  37         public class XmlDsigExcC14NTransform : Transform {
  38
  39                 #region Fields
  40
  41                 XmlCanonicalizer canonicalizer;
  42                 object inputObj;
  43                 string inclusiveNamespacesPrefixList;
  44                 bool includeComments;
  45
  46                 #endregion // Fields
  47
  48                 #region Constructors
  49
  50                 public XmlDsigExcC14NTransform ()
  51                 {
  52                         Algorithm = XmlSignature.AlgorithmNamespaces.XmlDsigExcC14NTransform;
  53                         canonicalizer = new XmlCanonicalizer (true, false);
  54                 }
  55
  56                 public XmlDsigExcC14NTransform (bool includeComments)
  57                 {
  58                         this.includeComments = includeComments;
  59                         canonicalizer = new XmlCanonicalizer (true, includeComments);
  60                 }
  61
  62                 [MonoTODO ("What does inclusiveNamespacesPrefixList mean?")]
  63                 public XmlDsigExcC14NTransform (string inclusiveNamespacesPrefixList)
  64                 {
  65                         this.inclusiveNamespacesPrefixList = inclusiveNamespacesPrefixList;
  66                 }
  67
  68                 [MonoTODO ("What does inclusiveNamespacesPrefixList mean?")]
  69                 public XmlDsigExcC14NTransform (bool includeComments, string inclusiveNamespacesPrefixList)
  70                 {
  71                         this.inclusiveNamespacesPrefixList = inclusiveNamespacesPrefixList;
  72                         this.includeComments = includeComments;
  73                 }
  74
  75                 #endregion // Constructors
  76
  77                 #region Properties
  78
  79                 public string InclusiveNamespacesPrefixList {
  80                         get { return inclusiveNamespacesPrefixList; }
  81                         set { inclusiveNamespacesPrefixList = value; }
  82                 }
  83
  84                 public override Type[] InputTypes {
  85                         get { return new Type [3] {typeof (System.IO.Stream), typeof (System.Xml.XmlDocument), typeof (System.Xml.XmlNodeList)}; }
  86                 }
  87
  88                 public override Type[] OutputTypes {
  89                         get { return new Type [1] {typeof (System.IO.Stream)}; }
  90                 }
  91
  92                 #endregion // Properties
  93
  94                 #region Methods
  95
  96                 public override byte[] GetDigestedOutput (HashAlgorithm hash)
  97                 {
  98                         return hash.ComputeHash ((Stream) GetOutput());
  99                 }
 100
 101                 protected override XmlNodeList GetInnerXml ()
 102                 {
 103                         return null;
 104                 }
 105
 106                 public override object GetOutput ()
 107                 {
 108                         Stream s = null;
 109
 110                         if (inputObj is Stream) {
 111                                 XmlDocument doc = new XmlDocument ();
 112                                 doc.PreserveWhitespace = true;  // REALLY IMPORTANT
 113                                 doc.Load (inputObj as Stream);
 114                                 s = canonicalizer.Canonicalize (doc);
 115                         }
 116                         else if (inputObj is XmlDocument)
 117                                 s = canonicalizer.Canonicalize (inputObj as XmlDocument);
 118                         else if (inputObj is XmlNodeList)
 119                                 s = canonicalizer.Canonicalize (inputObj as XmlNodeList);
 120
 121                         // note: there is no default are other types won't throw an exception
 122
 123                         return (object) s;
 124                 }
 125
 126                 public override object GetOutput (Type type)
 127                 {
 128                         if (type == Type.GetType ("Stream"))
 129                                 return GetOutput ();
 130                         throw new ArgumentException ("type");
 131                 }
 132
 133                 public override void LoadInnerXml (XmlNodeList nodeList)
 134                 {
 135                 }
 136
 137                 public override void LoadInput (object obj)
 138                 {
 139                         inputObj = obj;
 140                 }
 141
 142                 #endregion // Methods
 143         }
 144 }
 145
 146 #endif